Error 2660: qmlRegisterType fails when applying to class which inherits from 2 base classes

CertaBit

Hi All,

I want to register my class DA_RailCarrier to QML via

qmlRegisterType<DA_RailCarrier>("DA_RailCarrier", 1, 0, "DA_RailCarrier");

The class is declared as follows:
class DA_RailCarrier : public QObject, public WST_FSM

When compiling, I get the following message:
C2660: 'WST_FSM::operator new': function does not take 2 arguments

The error references to createInto in qqmlprivate.h:

{
    void Q_QML_EXPORT qdeclarativeelement_destructor(QObject *);
    template<typename T>
    class QQmlElement : public T
    {
    public:
        virtual ~QQmlElement() {
            QQmlPrivate::qdeclarativeelement_destructor(this);
        }
    };

    template<typename T>
    void createInto(void *memory) { new (memory) QQmlElement<T>; }

I tried to add#include <new>to WST_FSM, same result.
WST_FSM is in general not a Q_OBJECT derived class, but I've also tried it with QObject as base class.

Does anyone know a solution? thanks in advance,

Markus

System Info:

Qt 5.4.1
Compiler MSVC2013

SGaist

Hi,

Can you show the declaration of WST_FSM and DA_RailCarrier ?

CertaBit

@SGaist
Hi,

WST_FSM:

class WST_FSM {
    ////    Constructors and destructors    ////
    //## operation WST_FSM(WST_TSK)
    WST_FSM();
    
    //## operation ~WST_FSM()
    virtual ~WST_FSM( void );
...

DA_RailCarrier:

class DA_RailCarrier : public QObject, public WST_FSM {
        Q_OBJECT
        Q_PROPERTY( QVariantList Order_t READ getQmlOrder_t NOTIFY guiRefresh)

SGaist

That's not enough to identify the problem at hand, you should post the complete declaration of both classes